ASTROSAT CZTI

Data Quality Report

Orbit 16907

Creation date: 2024-06-27T17:29:21.134015
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_004T03_9000002508_16907cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16907cztM0_level2_quad_clean.evt
Size (bytes)538,715,52083,920,320
Size513.8 MB 80.0 MB
Events in quadrant A5,311,188511,402
Events in quadrant B3,508,143549,408
Events in quadrant C3,678,212518,291
Events in quadrant D3,380,429512,414

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198182
B0142412
C0149612
D0140322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64406319.798137%
B64401452.251553%
C64401332.065217%
D64401081.677019%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7642 6442 420 420 5.50% 6.52%
B 7642 6442 5 5 0.07% 0.08%
C 7642 6442 1 1 0.01% 0.02%
D 7642 6442 21 21 0.27% 0.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 2083013 12546.59 831 816 166.0
A 9 143 21050 121.92 831 816 166.0
A 11 29 11424 63.92 831 816 166.0
B 15 35 93070 573.58 852 833 160.8
B 12 111 18265 108.4 852 833 160.8
B 0 219 16353 96.51 852 833 160.8
C 3 233 411295 2225.74 802 809 184.4
C 14 238 127471 686.79 802 809 184.4
C 5 112 7638 37.03 802 809 184.4
D 1 52 144388 720.46 820 795 199.3
D 12 235 112516 560.54 820 795 199.3
D 2 234 23784 115.34 820 795 199.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter